Vahlbruch BBQ-XL: Buffer, Booster, Equalizer The Vahlbruch "BBQ-XL", which is the big brother of the "BBQ"-pedal, is a super versatile dual channel transparent clean boost, equalizer and high-end buffer, housed within a compact and pedalboard friendly enclosure. It perfectly serves as a booster to push your amp harder or it can also be set to clean up the tone of a crunchy amp, thereby transforming a single channel amp into a versatile 3 channel monster! The "BBQ-XL" can also help to adjust different guitars to your amplifier without turning a knob during the show. These are just two examples of a magnitude of applications! With its switchable high-end buffer / line-driver circuit, the "BBQ-XL" also eliminates impedance adjustment problems and therefore preserves your signal without changing or coloring your original tone even when using long cables and effect chains. The Vahlbruch "BBQ-XL" is also suitable for bass and acoustic guitars! Each channel features its own volume and active 3-Band EQ controls. The volume can be adjusted over a wide range from -8dB to +16dB, and each band of the active equalizer has a boost/cut range of +/-15dB for a precise adjustment of bass, middle and treble. In my unique circuit, the unwanted interaction between the individual EQ-bands is eliminated and each control does not interfere with the other. Via an internal switch, you can choose to have the "BBQ-XL" operate in true bypass or buffered bypass mode. An LED indicates the activated buffer mode as "Buffered Bypass".
This pedal is equipped with my unique "MagTraB" switching technology: Inside the button a magnet is integrated which position is measured by a sensor on the circuit board. If the button is now moved, e.g. it is pressed downwards, the position of the magnet will also change. The sensor measures this change without any mechanical contact to the button and the information is send via a micro-controller to a solid state relay, which then does the actual audio signal switching.
The advantages of "MagTraB" footswitches: "MagTraB" buttons are as good as indestructible! "MagTraB" delivers an almost infinite number of switching cycles - many, many millions! No annoying, mechanical switch clicks! Instead, the "MagTraB" push-buttons switch very smooth and quiet!
You can choose if the pedal powers up in "bypass" or with one of the channels activated as default! Only 4 steps are required to change this state: Step 1: Unplug the power supply cable. Step 2: Hold down the "MagTraB" button of the desired channel (either channel 1 or channel 2). Step 3: Reconnnect the power supply cable, still holding down the "MagTraB" button. Step 4: Release the "MagTraB" button. DONE! In order to undo the programming, simply repeat the steps 1-4. The next time your pedal powers up, it will automatically start with the selected channel active or in its bypass setting, just depending on what you have stored. Technical Specifications: Sturdy and unique "MagTraB" switching technology The volume can be adjusted from -8dB to +16dB The active 3-band equalizer provides a boost/cut range of +/-15dB for the bass, middle and treble controls. No interaction between the controls. True bypass or buffered bypass mode can be selected via an internal switch. Also suitable for bass and acoustic guitars! Input impedance: 1.0M Ohms Output impedance: 100 Ohms Current consumption: 50mA This pedal requires an external regulated 9V to 18V power supply (not included) polarity: postive@ring / negative@tip Dimensions: 120mm x 100mm x 48mm Weight: 350g Handmade in Germany